我收到一个奇怪的错误代码：
\expandafter \let \cmrsideswitch \@tempa \fi \fi?
上面的问题有相同的代码，并且很喜欢他的使用\cmidrule。我正在使用\midrule，但似乎无法弄清楚如何从上面的问题中解决我的问题。
示例如下：
\documentclass[12pt]{article}
\usepackage{longtable}
\usepackage{booktabs}
\setlength{\oddsidemargin}{0in} % first of the commands relating to page formatting that were not included in the original question
\setlength{\evensidemargin}{0in}
\setlength{\topmargin}{-.5in}
\setlength{\headsep}{0in}
\setlength{\textwidth}{6.5in}
\setlength{\textheight}{8.5in}
\def\refhg{\hangindent=20pt\hangafter=1}
\def\refmark{\par\vskip 2mm\noindent\refhg}
\def\refhg{\hangindent=20pt\hangafter=1}
\def\refmark{\par\vskip 2mm\noindent\refhg}
\def\refhg{\hangindent=20pt\hangafter=1} %20pt
\def\refhgb{\hangindent=10pt\hangafter=1}
\def\refmark{\par\vskip 2mm\noindent\refhg}
\renewcommand{\baselinestretch}{1.5} % last of commands not included in original question
\begin{document}
\begin{longtable}{clcccccccc}
\toprule
\multicolumn{10}{c}{Simulation Results for n=30} \\
& & & & & & {$\sigma^2$} \\
\cline{3-10}
($\rho_1$, $\rho_2$) & Estimator & 0.0001 & 0.25 & 1 & 25 & 50 & 75 & 100 & 400 \\
\midrule
(0.99,0.99) & HK &1.000 &0.587 &0.564 &0.551 &0.557 &0.559 &0.559 &0.558\\
& HKB &0.998 &0.354 &0.311 &0.277 &0.282 &0.283 &0.283 &0.280\\
& LW &1.000 &0.415 &0.179 &0.011 &0.005 &0.003 &0.002 &0.001\\
& ICOMP &0.873 &0.469 &0.450 &0.415 &0.423 &0.426 &0.426 &0.421\\
& S &0.873 &0.309 &0.133 &0.009 &0.004 &0.003 &0.002 &0.001\\
& GM &0.651 &0.176 &0.146 &0.068 &0.059 &0.053 &0.050 &0.040\\
& AM &52.214 &0.131 &0.086 &0.010 &0.006 &0.004 &0.003 &0.002\\
& MED &0.688 &0.265 &0.181 &0.130 &0.131 &0.130 &0.130 &0.128\\
& JRR &1.000 &0.673 &0.613 &0.563 &0.569 &0.570 &0.570 &0.567\\
& URR &0.431 &0.176 &0.178 &0.170 &0.177 &0.180 &0.179 &0.174\\
& PCR &0.973 &0.807 &0.811 &0.806 &0.809 &0.810 &0.809 &0.811\\
& PCR CI &0.476 &0.001 &0.001 &0.001 &0.001 &0.001 &0.001 &0.001\\
& R-K &2.132 &0.178 &0.178 &0.170 &0.177 &0.180 &0.179 &0.174\\
& R-K CI &2.170 &0.003 &0.001 &0.001 &0.001 &0.001 &0.001 &0.001\\
& MCRR &0.439 &0.170 &0.172 &0.165 &0.172 &0.174 &0.173 &0.168\\
& MCRR CI &0.476 &0.001 &0.001 &0.001 &0.001 &0.001 &0.001 &0.001\\
& LRRE &0.465 &0.001 &0.001 &0.001 &0.001 &0.001 &0.001 &0.001\\
& LRRE MSE &0.645 &0.486 &0.486 &0.478 &0.485 &0.487 &0.487 &0.486\\
& OIRE &1.479 &0.294 &0.145 &0.149 &0.162 &0.164 &0.163 &0.159\\
& OIRE MSE &1.587 &0.097 &0.072 &0.137 &0.153 &0.156 &0.155 &0.152\\
& GIREI &1.000 &0.902 &0.998 &0.480 &0.389 &0.346 &0.317 &0.261\\
& GIREI MSE &1.000 &0.703 &0.600 &0.373 &0.325 &0.299 &0.279 &0.239\\
& GIREII &1.029 &0.487 &0.359 &0.233 &0.239 &0.237 &0.231 &0.216\\
& GIREII MSE &1.046 &0.438 &0.305 &0.187 &0.193 &0.192 &0.189 &0.179\\
\midrule
(0.99,0.1) & HK &1.000 &0.59 &0.541 &0.525 &0.52 &0.523 &0.522 &0.521\\
& HKB &0.998 &0.320 &0.257 &0.218 &0.212 &0.214 &0.212 &0.212\\
& LW &0.999 &0.369 &0.154 &0.020 &0.014 &0.012 &0.011 &0.009\\
& ICOMP &0.892 &0.100 &0.089 &0.085 &0.083 &0.086 &0.084 &0.086\\
& S &0.892 &0.088 &0.058 &0.015 &0.012 &0.011 &0.010 &0.009\\
& GM &0.728 &0.062 &0.043 &0.020 &0.018 &0.016 &0.016 &0.014\\
& AM &101.610 &0.373 &0.142 &0.016 &0.010 &0.007 &0.006 &0.004\\
& MED &0.772 &0.196 &0.118 &0.020 &0.016 &0.014 &0.013 &0.012\\
& JRR &1.000 &0.633 &0.533 &0.463 &0.454 &0.457 &0.455 &0.454\\
& URR &0.988 &0.162 &0.151 &0.149 &0.145 &0.147 &0.146 &0.146\\
& PCR &0.944 &0.813 &0.816 &0.817 &0.809 &0.811 &0.814 &0.812\\
& PCR CI &0.474 &0.022 &0.022 &0.022 &0.022 &0.021 &0.022 &0.022\\
& R-K &0.933 &0.163 &0.151 &0.148 &0.144 &0.146 &0.145 &0.145\\
& R-K CI &0.474 &0.025 &0.020 &0.017 &0.017 &0.017 &0.017 &0.017\\
& MCRR &0.934 &0.156 &0.147 &0.146 &0.141 &0.144 &0.143 &0.143\\
& MCRR CI &0.474 &0.023 &0.020 &0.018 &0.018 &0.017 &0.017 &0.017\\
& LRRE &0.472 &0.007 &0.007 &0.008 &0.007 &0.007 &0.006 &0.006\\
& LRRE MSE &0.639 &0.488 &0.490 &0.491 &0.486 &0.489 &0.487 &0.485\\
& OIRE &0.845 &0.055 &0.103 &0.158 &0.154 &0.156 &0.153 &0.150\\
& OIRE MSE &1.031 &0.038 &0.085 &0.152 &0.148 &0.150 &0.147 &0.144\\
& GIREI &1.000 &0.974 &0.961 &0.360 &0.302 &0.280 &0.265 &0.236\\
& GIREI MSE &1.000 &0.539 &0.485 &0.292 &0.262 &0.249 &0.238 &0.219\\
& GIREII &0.853 &0.213 &0.160 &0.143 &0.137 &0.138 &0.133 &0.131\\
& GIREII MSE &0.792 &0.192 &0.156 &0.138 &0.131 &0.132 &0.127 &0.126\\
\midrule
(0.9,0.9) & HK &1.000 &0.874 &0.709 &0.568 &0.564 &0.562 &0.564 &0.561\\
& HKB &1.000 &0.649 &0.475 &0.300 &0.292 &0.289 &0.291 &0.285\\
& LW &1.000 &0.861 &0.654 &0.102 &0.070 &0.059 &0.054 &0.043\\
& ICOMP &0.998 &0.640 &0.594 &0.545 &0.543 &0.542 &0.545 &0.540\\
& S &0.998 &0.639 &0.539 &0.096 &0.068 &0.058 &0.054 &0.043\\
& GM &0.996 &0.306 &0.244 &0.113 &0.099 &0.091 &0.087 &0.074\\
& AM &1.024 &0.811 &0.380 &0.065 &0.044 &0.035 &0.031 &0.021\\
& MED &0.998 &0.361 &0.324 &0.145 &0.136 &0.133 &0.133 &0.129\\
& JRR &1.000 &0.919 &0.790 &0.593 &0.582 &0.578 &0.580 &0.573\\
& URR &1.014 &0.197 &0.187 &0.182 &0.181 &0.181 &0.183 &0.179\\
& PCR &1.000 &0.828 &0.817 &0.813 &0.812 &0.812 &0.815 &0.814\\
& PCR CI &1.000 &1.000 &1.000 &1.000 &1.000 &1.000 &1.000 &1.000\\
& R-K &1.018 &0.275 &0.217 &0.183 &0.180 &0.180 &0.183 &0.178\\
& R-K CI &1.018 &0.275 &0.217 &0.183 &0.180 &0.180 &0.183 &0.178\\
& MCRR &1.014 &0.193 &0.182 &0.177 &0.176 &0.176 &0.179 &0.174\\
& MCRR CI &1.014 &0.197 &0.187 &0.182 &0.181 &0.181 &0.183 &0.179\\
& LRRE &8.418 &0.053 &0.032 &0.021 &0.019 &0.019 &0.018 &0.016\\
& LRRE MSE &1.064 &0.502 &0.493 &0.493 &0.491 &0.491 &0.493 &0.489\\
& OIRE &0.999 &0.229 &0.236 &0.218 &0.205 &0.200 &0.201 &0.189\\
& OIRE MSE &0.998 &0.182 &0.207 &0.208 &0.197 &0.193 &0.194 &0.183\\
& GIREI &1.000 &0.932 &1.008 &0.428 &0.344 &0.310 &0.294 &0.248\\
& GIREI MSE &1.000 &0.633 &0.586 &0.350 &0.298 &0.274 &0.266 &0.230\\
& GIREII &0.978 &0.449 &0.376 &0.297 &0.271 &0.258 &0.254 &0.231\\
& GIREII MSE &0.976 &0.450 &0.379 &0.268 &0.245 &0.235 &0.232 &0.212\\
\midrule
(0.9,0.1) & HK &1.000 &0.905 &0.759 &0.576 &0.565 &0.564 &0.563 &0.566\\
& HKB &1.000 &0.706 &0.521 &0.304 &0.289 &0.286 &0.283 &0.281\\
& LW &1.000 &0.842 &0.630 &0.156 &0.125 &0.115 &0.107 &0.095\\
& ICOMP &0.999 &0.539 &0.453 &0.366 &0.356 &0.356 &0.355 &0.355\\
& S &0.999 &0.538 &0.440 &0.147 &0.121 &0.114 &0.106 &0.095\\
& GM &0.998 &0.484 &0.316 &0.117 &0.100 &0.093 &0.088 &0.077\\
& AM &56.142 &2.452 &1.063 &0.116 &0.072 &0.057 &0.049 &0.034\\
& MED &0.998 &0.628 &0.412 &0.135 &0.113 &0.108 &0.102 &0.092\\
& JRR &1.000 &0.937 &0.804 &0.564 &0.546 &0.543 &0.540 &0.537\\
& URR &1.000 &0.537 &0.406 &0.231 &0.219 &0.218 &0.216 &0.214\\
& PCR &1.064 &0.847 &0.828 &0.818 &0.818 &0.818 &0.818 &0.819\\
& PCR CI &1.000 &1.000 &1.000 &1.000 &1.000 &1.000 &1.000 &1.000\\
& R-K &1.063 &0.491 &0.370 &0.210 &0.198 &0.197 &0.195 &0.194\\
& R-K CI &0.999 &0.498 &0.372 &0.210 &0.198 &0.197 &0.195 &0.194\\
& MCRR &1.063 &0.481 &0.346 &0.216 &0.206 &0.206 &0.204 &0.201\\
& MCRR CI &1.000 &0.537 &0.406 &0.231 &0.219 &0.218 &0.216 &0.214\\
& LRRE &2.626 &0.112 &0.083 &0.069 &0.064 &0.064 &0.062 &0.057\\
& LRRE MSE &1.094 &0.527 &0.504 &0.497 &0.492 &0.491 &0.490 &0.491 \\
& OIRE &96.090 &0.266 &0.425 &0.242 &0.216 &0.210 &0.204 &0.197\\
& OIRE MSE &51.462 &0.224 &0.298 &0.228 &0.207 &0.203 &0.198 &0.192\\
& GIREI &1.001 &1.165 &1.080 &0.396 &0.323 &0.294 &0.278 &0.248\\
& GIREI MSE &1.000 &0.652 &0.583 &0.324 &0.281 &0.262 &0.252 &0.231\\
& GIREII &2.356 &0.750 &0.445 &0.275 &0.247 &0.238 &0.232 &0.221\\
& GIREII MSE &2.897 &0.510 &0.356 &0.257 &0.233 &0.226 &0.220 &0.210\\
\midrule
(0.7,0.3) & HK &1.000 &0.959 &0.875 &0.597 &0.585 &0.579 &0.578 &0.572 \\
& HKB &1.000 &0.842 &0.678 &0.347 &0.327 &0.318 &0.315 &0.306\\
& LW &1.000 &0.922 &0.790 &0.273 &0.232 &0.215 &0.208 &0.190\\
& ICOMP &1.000 &0.833 &0.746 &0.606 &0.598 &0.594 &0.593 &0.589\\
& S &1.000 &0.833 &0.732 &0.270 &0.231 &0.215 &0.208 &0.190\\
& GM &1.036 &1.325 &0.750 &0.192 &0.154 &0.139 &0.132 &0.116\\
& AM &2043.436 &6.822 &2.632 &0.244 &0.138 &0.104 &0.088 &0.062\\
& MED &1.014 &1.741 &0.883 &0.233 &0.190 &0.176 &0.168 &0.152\\
& JRR &1.000 &0.982 &0.912 &0.627 &0.608 &0.599 &0.596 &0.587\\
& URR &1.000 &0.725 &0.515 &0.250 &0.236 &0.231 &0.231 &0.229\\
& PCR &1.021 &0.847 &0.827 &0.829 &0.829 &0.829 &0.827 &0.822\\
& PCR CI &1.000 &1.000 &1.000 &1.000 &1.000 &1.000 &1.000 &1.000\\
& R-K &1.020 &0.741 &0.647 &0.234 &0.213 &0.205 &0.202 &0.196\\
& R-K CI &1.000 &0.748 &0.649 &0.234 &0.213 &0.205 &0.202 &0.196\\
& MCRR &1.021 &0.577 &0.422 &0.240 &0.228 &0.223 &0.223 &0.218\\
& MCRR CI &1.000 &0.725 &0.515 &0.250 &0.236 &0.231 &0.231 &0.229\\
& LRRE &1.993 &0.179 &0.157 &0.143 &0.134 &0.129 &0.127 &0.121\\
& LRRE MSE &1.042 &0.535 &0.519 &0.514 &0.510 &0.504 &0.502 &0.493\\
& OIRE &5.249 &1.009 &0.916 &0.316 &0.272 &0.251 &0.243 &0.217\\
& OIRE MSE &5.249 &0.542 &0.424 &0.286 &0.259 &0.243 &0.237 &0.213\\
& GIREI &1.000 &1.058 &1.022 &0.407 &0.341 &0.305 &0.290 &0.253\\
& GIREI MSE &1.000 &0.649 &0.603 &0.355 &0.309 &0.280 &0.270 &0.238\\
& GIREII &5.432 &0.774 &0.521 &0.361 &0.322 &0.298 &0.286 &0.250\\
& GIREII MSE &4.496 &0.562 &0.422 &0.341 &0.308 &0.285 &0.275 &0.240\\
\bottomrule
\caption{Simulation Results for Population Size 30}
\end{longtable}
\end{document}
答案1
以下是我排版表格的方式：
\documentclass[12pt]{article}
\usepackage[tableposition = top]{caption}
\usepackage{longtable, booktabs}
\usepackage{siunitx}
\setlength{\oddsidemargin}{0in}
\setlength{\evensidemargin}{0in}
\setlength{\topmargin}{-.5in}
\setlength{\headsep}{0in}
\setlength{\textwidth}{6.5in}
\setlength{\textheight}{8.5in}
\def\refhg{\hangindent=20pt\hangafter=1}
\def\refmark{\par\vskip 2mm\noindent\refhg}
\def\refhg{\hangindent=20pt\hangafter=1}
\def\refmark{\par\vskip 2mm\noindent\refhg}
\def\refhg{\hangindent=20pt\hangafter=1}
\def\refhgb{\hangindent=10pt\hangafter=1}
\def\refmark{\par\vskip 2mm\noindent\refhg}
\renewcommand{\baselinestretch}{1.5}
\newcommand*\mc[1]{\multicolumn{1}{c}{#1}}
\setlength\tabcolsep{5.69pt} % distance between columns in table
\begin{document}
\begin{center}
\begin{longtable}{
c
l
S[table-format = 4.3]
*{7}{S[table-format = 1.3]}
}
\caption{Simulation Results for Population Size~$n = 30$.} \\
\toprule
& & \multicolumn{8}{c}{$\sigma^{2}$} \\
\cline{3-10}
$(\rho_{1},\rho_{2})$ & \mc{Estimator} & {0.0001} & {0.25} & {1} & {25} & {50} & {75} & {100} & {400} \\
\midrule
$(0.99,0.99)$ & HK & 1.000 & 0.587 & 0.564 & 0.551 & 0.557 & 0.559 & 0.559 & 0.558 \\
& HKB & 0.998 & 0.354 & 0.311 & 0.277 & 0.282 & 0.283 & 0.283 & 0.280 \\
& LW & 1.000 & 0.415 & 0.179 & 0.011 & 0.005 & 0.003 & 0.002 & 0.001 \\
& ICOMP & 0.873 & 0.469 & 0.450 & 0.415 & 0.423 & 0.426 & 0.426 & 0.421 \\
& S & 0.873 & 0.309 & 0.133 & 0.009 & 0.004 & 0.003 & 0.002 & 0.001 \\
& GM & 0.651 & 0.176 & 0.146 & 0.068 & 0.059 & 0.053 & 0.050 & 0.040 \\
& AM & 52.214 & 0.131 & 0.086 & 0.010 & 0.006 & 0.004 & 0.003 & 0.002 \\
& MED & 0.688 & 0.265 & 0.181 & 0.130 & 0.131 & 0.130 & 0.130 & 0.128 \\
& JRR & 1.000 & 0.673 & 0.613 & 0.563 & 0.569 & 0.570 & 0.570 & 0.567 \\
& URR & 0.431 & 0.176 & 0.178 & 0.170 & 0.177 & 0.180 & 0.179 & 0.174 \\
& PCR & 0.973 & 0.807 & 0.811 & 0.806 & 0.809 & 0.810 & 0.809 & 0.811 \\
& PCR CI & 0.476 & 0.001 & 0.001 & 0.001 & 0.001 & 0.001 & 0.001 & 0.001 \\
& R-K & 2.132 & 0.178 & 0.178 & 0.170 & 0.177 & 0.180 & 0.179 & 0.174 \\
& R-K CI & 2.170 & 0.003 & 0.001 & 0.001 & 0.001 & 0.001 & 0.001 & 0.001 \\
& MCRR & 0.439 & 0.170 & 0.172 & 0.165 & 0.172 & 0.174 & 0.173 & 0.168 \\
& MCRR CI & 0.476 & 0.001 & 0.001 & 0.001 & 0.001 & 0.001 & 0.001 & 0.001 \\
& LRRE & 0.465 & 0.001 & 0.001 & 0.001 & 0.001 & 0.001 & 0.001 & 0.001 \\
& LRRE MSE & 0.645 & 0.486 & 0.486 & 0.478 & 0.485 & 0.487 & 0.487 & 0.486 \\
& OIRE & 1.479 & 0.294 & 0.145 & 0.149 & 0.162 & 0.164 & 0.163 & 0.159 \\
& OIRE MSE & 1.587 & 0.097 & 0.072 & 0.137 & 0.153 & 0.156 & 0.155 & 0.152 \\
& GIREI & 1.000 & 0.902 & 0.998 & 0.480 & 0.389 & 0.346 & 0.317 & 0.261 \\
& GIREI MSE & 1.000 & 0.703 & 0.600 & 0.373 & 0.325 & 0.299 & 0.279 & 0.239 \\
& GIREII & 1.029 & 0.487 & 0.359 & 0.233 & 0.239 & 0.237 & 0.231 & 0.216 \\
& GIREII MSE & 1.046 & 0.438 & 0.305 & 0.187 & 0.193 & 0.192 & 0.189 & 0.179 \\
\midrule
$(0.99,0.1)$ & HK & 1.000 & 0.59 & 0.541 & 0.525 & 0.52 & 0.523 & 0.522 & 0.521 \\
& HKB & 0.998 & 0.320 & 0.257 & 0.218 & 0.212 & 0.214 & 0.212 & 0.212 \\
& LW & 0.999 & 0.369 & 0.154 & 0.020 & 0.014 & 0.012 & 0.011 & 0.009 \\
& ICOMP & 0.892 & 0.100 & 0.089 & 0.085 & 0.083 & 0.086 & 0.084 & 0.086 \\
& S & 0.892 & 0.088 & 0.058 & 0.015 & 0.012 & 0.011 & 0.010 & 0.009 \\
& GM & 0.728 & 0.062 & 0.043 & 0.020 & 0.018 & 0.016 & 0.016 & 0.014 \\
& AM & 101.610 & 0.373 & 0.142 & 0.016 & 0.010 & 0.007 & 0.006 & 0.004 \\
& MED & 0.772 & 0.196 & 0.118 & 0.020 & 0.016 & 0.014 & 0.013 & 0.012 \\
& JRR & 1.000 & 0.633 & 0.533 & 0.463 & 0.454 & 0.457 & 0.455 & 0.454 \\
& URR & 0.988 & 0.162 & 0.151 & 0.149 & 0.145 & 0.147 & 0.146 & 0.146 \\
& PCR & 0.944 & 0.813 & 0.816 & 0.817 & 0.809 & 0.811 & 0.814 & 0.812 \\
& PCR CI & 0.474 & 0.022 & 0.022 & 0.022 & 0.022 & 0.021 & 0.022 & 0.022 \\
& R-K & 0.933 & 0.163 & 0.151 & 0.148 & 0.144 & 0.146 & 0.145 & 0.145 \\
& R-K CI & 0.474 & 0.025 & 0.020 & 0.017 & 0.017 & 0.017 & 0.017 & 0.017 \\
& MCRR & 0.934 & 0.156 & 0.147 & 0.146 & 0.141 & 0.144 & 0.143 & 0.143 \\
& MCRR CI & 0.474 & 0.023 & 0.020 & 0.018 & 0.018 & 0.017 & 0.017 & 0.017 \\
& LRRE & 0.472 & 0.007 & 0.007 & 0.008 & 0.007 & 0.007 & 0.006 & 0.006 \\
& LRRE MSE & 0.639 & 0.488 & 0.490 & 0.491 & 0.486 & 0.489 & 0.487 & 0.485 \\
& OIRE & 0.845 & 0.055 & 0.103 & 0.158 & 0.154 & 0.156 & 0.153 & 0.150 \\
& OIRE MSE & 1.031 & 0.038 & 0.085 & 0.152 & 0.148 & 0.150 & 0.147 & 0.144 \\
& GIREI & 1.000 & 0.974 & 0.961 & 0.360 & 0.302 & 0.280 & 0.265 & 0.236 \\
& GIREI MSE & 1.000 & 0.539 & 0.485 & 0.292 & 0.262 & 0.249 & 0.238 & 0.219 \\
& GIREII & 0.853 & 0.213 & 0.160 & 0.143 & 0.137 & 0.138 & 0.133 & 0.131 \\
& GIREII MSE & 0.792 & 0.192 & 0.156 & 0.138 & 0.131 & 0.132 & 0.127 & 0.126 \\
\midrule
$(0.9,0.9)$ & HK & 1.000 & 0.874 & 0.709 & 0.568 & 0.564 & 0.562 & 0.564 & 0.561 \\
& HKB & 1.000 & 0.649 & 0.475 & 0.300 & 0.292 & 0.289 & 0.291 & 0.285 \\
& LW & 1.000 & 0.861 & 0.654 & 0.102 & 0.070 & 0.059 & 0.054 & 0.043 \\
& ICOMP & 0.998 & 0.640 & 0.594 & 0.545 & 0.543 & 0.542 & 0.545 & 0.540 \\
& S & 0.998 & 0.639 & 0.539 & 0.096 & 0.068 & 0.058 & 0.054 & 0.043 \\
& GM & 0.996 & 0.306 & 0.244 & 0.113 & 0.099 & 0.091 & 0.087 & 0.074 \\
& AM & 1.024 & 0.811 & 0.380 & 0.065 & 0.044 & 0.035 & 0.031 & 0.021 \\
& MED & 0.998 & 0.361 & 0.324 & 0.145 & 0.136 & 0.133 & 0.133 & 0.129 \\
& JRR & 1.000 & 0.919 & 0.790 & 0.593 & 0.582 & 0.578 & 0.580 & 0.573 \\
& URR & 1.014 & 0.197 & 0.187 & 0.182 & 0.181 & 0.181 & 0.183 & 0.179 \\
& PCR & 1.000 & 0.828 & 0.817 & 0.813 & 0.812 & 0.812 & 0.815 & 0.814 \\
& PCR CI & 1.000 & 1.000 & 1.000 & 1.000 & 1.000 & 1.000 & 1.000 & 1.000 \\
& R-K & 1.018 & 0.275 & 0.217 & 0.183 & 0.180 & 0.180 & 0.183 & 0.178 \\
& R-K CI & 1.018 & 0.275 & 0.217 & 0.183 & 0.180 & 0.180 & 0.183 & 0.178 \\
& MCRR & 1.014 & 0.193 & 0.182 & 0.177 & 0.176 & 0.176 & 0.179 & 0.174 \\
& MCRR CI & 1.014 & 0.197 & 0.187 & 0.182 & 0.181 & 0.181 & 0.183 & 0.179 \\
& LRRE & 8.418 & 0.053 & 0.032 & 0.021 & 0.019 & 0.019 & 0.018 & 0.016 \\
& LRRE MSE & 1.064 & 0.502 & 0.493 & 0.493 & 0.491 & 0.491 & 0.493 & 0.489 \\
& OIRE & 0.999 & 0.229 & 0.236 & 0.218 & 0.205 & 0.200 & 0.201 & 0.189 \\
& OIRE MSE & 0.998 & 0.182 & 0.207 & 0.208 & 0.197 & 0.193 & 0.194 & 0.183 \\
& GIREI & 1.000 & 0.932 & 1.008 & 0.428 & 0.344 & 0.310 & 0.294 & 0.248 \\
& GIREI MSE & 1.000 & 0.633 & 0.586 & 0.350 & 0.298 & 0.274 & 0.266 & 0.230 \\
& GIREII & 0.978 & 0.449 & 0.376 & 0.297 & 0.271 & 0.258 & 0.254 & 0.231 \\
& GIREII MSE & 0.976 & 0.450 & 0.379 & 0.268 & 0.245 & 0.235 & 0.232 & 0.212 \\
\midrule
$(0.9,0.1)$ & HK & 1.000 & 0.905 & 0.759 & 0.576 & 0.565 & 0.564 & 0.563 & 0.566 \\
& HKB & 1.000 & 0.706 & 0.521 & 0.304 & 0.289 & 0.286 & 0.283 & 0.281 \\
& LW & 1.000 & 0.842 & 0.630 & 0.156 & 0.125 & 0.115 & 0.107 & 0.095 \\
& ICOMP & 0.999 & 0.539 & 0.453 & 0.366 & 0.356 & 0.356 & 0.355 & 0.355 \\
& S & 0.999 & 0.538 & 0.440 & 0.147 & 0.121 & 0.114 & 0.106 & 0.095 \\
& GM & 0.998 & 0.484 & 0.316 & 0.117 & 0.100 & 0.093 & 0.088 & 0.077 \\
& AM & 56.142 & 2.452 & 1.063 & 0.116 & 0.072 & 0.057 & 0.049 & 0.034 \\
& MED & 0.998 & 0.628 & 0.412 & 0.135 & 0.113 & 0.108 & 0.102 & 0.092 \\
& JRR & 1.000 & 0.937 & 0.804 & 0.564 & 0.546 & 0.543 & 0.540 & 0.537 \\
& URR & 1.000 & 0.537 & 0.406 & 0.231 & 0.219 & 0.218 & 0.216 & 0.214 \\
& PCR & 1.064 & 0.847 & 0.828 & 0.818 & 0.818 & 0.818 & 0.818 & 0.819 \\
& PCR CI & 1.000 & 1.000 & 1.000 & 1.000 & 1.000 & 1.000 & 1.000 & 1.000 \\
& R-K & 1.063 & 0.491 & 0.370 & 0.210 & 0.198 & 0.197 & 0.195 & 0.194 \\
& R-K CI & 0.999 & 0.498 & 0.372 & 0.210 & 0.198 & 0.197 & 0.195 & 0.194 \\
& MCRR & 1.063 & 0.481 & 0.346 & 0.216 & 0.206 & 0.206 & 0.204 & 0.201 \\
& MCRR CI & 1.000 & 0.537 & 0.406 & 0.231 & 0.219 & 0.218 & 0.216 & 0.214 \\
& LRRE & 2.626 & 0.112 & 0.083 & 0.069 & 0.064 & 0.064 & 0.062 & 0.057 \\
& LRRE MSE & 1.094 & 0.527 & 0.504 & 0.497 & 0.492 & 0.491 & 0.490 & 0.491 \\
& OIRE & 96.090 & 0.266 & 0.425 & 0.242 & 0.216 & 0.210 & 0.204 & 0.197 \\
& OIRE MSE & 51.462 & 0.224 & 0.298 & 0.228 & 0.207 & 0.203 & 0.198 & 0.192 \\
& GIREI & 1.001 & 1.165 & 1.080 & 0.396 & 0.323 & 0.294 & 0.278 & 0.248 \\
& GIREI MSE & 1.000 & 0.652 & 0.583 & 0.324 & 0.281 & 0.262 & 0.252 & 0.231 \\
& GIREII & 2.356 & 0.750 & 0.445 & 0.275 & 0.247 & 0.238 & 0.232 & 0.221 \\
& GIREII MSE & 2.897 & 0.510 & 0.356 & 0.257 & 0.233 & 0.226 & 0.220 & 0.210 \\
\midrule
$(0.7,0.3)$ & HK & 1.000 & 0.959 & 0.875 & 0.597 & 0.585 & 0.579 & 0.578 & 0.572 \\
& HKB & 1.000 & 0.842 & 0.678 & 0.347 & 0.327 & 0.318 & 0.315 & 0.306 \\
& LW & 1.000 & 0.922 & 0.790 & 0.273 & 0.232 & 0.215 & 0.208 & 0.190 \\
& ICOMP & 1.000 & 0.833 & 0.746 & 0.606 & 0.598 & 0.594 & 0.593 & 0.589 \\
& S & 1.000 & 0.833 & 0.732 & 0.270 & 0.231 & 0.215 & 0.208 & 0.190 \\
& GM & 1.036 & 1.325 & 0.750 & 0.192 & 0.154 & 0.139 & 0.132 & 0.116 \\
& AM & 2043.436 & 6.822 & 2.632 & 0.244 & 0.138 & 0.104 & 0.088 & 0.062 \\
& MED & 1.014 & 1.741 & 0.883 & 0.233 & 0.190 & 0.176 & 0.168 & 0.152 \\
& JRR & 1.000 & 0.982 & 0.912 & 0.627 & 0.608 & 0.599 & 0.596 & 0.587 \\
& URR & 1.000 & 0.725 & 0.515 & 0.250 & 0.236 & 0.231 & 0.231 & 0.229 \\
& PCR & 1.021 & 0.847 & 0.827 & 0.829 & 0.829 & 0.829 & 0.827 & 0.822 \\
& PCR CI & 1.000 & 1.000 & 1.000 & 1.000 & 1.000 & 1.000 & 1.000 & 1.000 \\
& R-K & 1.020 & 0.741 & 0.647 & 0.234 & 0.213 & 0.205 & 0.202 & 0.196 \\
& R-K CI & 1.000 & 0.748 & 0.649 & 0.234 & 0.213 & 0.205 & 0.202 & 0.196 \\
& MCRR & 1.021 & 0.577 & 0.422 & 0.240 & 0.228 & 0.223 & 0.223 & 0.218 \\
& MCRR CI & 1.000 & 0.725 & 0.515 & 0.250 & 0.236 & 0.231 & 0.231 & 0.229 \\
& LRRE & 1.993 & 0.179 & 0.157 & 0.143 & 0.134 & 0.129 & 0.127 & 0.121 \\
& LRRE MSE & 1.042 & 0.535 & 0.519 & 0.514 & 0.510 & 0.504 & 0.502 & 0.493 \\
& OIRE & 5.249 & 1.009 & 0.916 & 0.316 & 0.272 & 0.251 & 0.243 & 0.217 \\
& OIRE MSE & 5.249 & 0.542 & 0.424 & 0.286 & 0.259 & 0.243 & 0.237 & 0.213 \\
& GIREI & 1.000 & 1.058 & 1.022 & 0.407 & 0.341 & 0.305 & 0.290 & 0.253 \\
& GIREI MSE & 1.000 & 0.649 & 0.603 & 0.355 & 0.309 & 0.280 & 0.270 & 0.238 \\
& GIREII & 5.432 & 0.774 & 0.521 & 0.361 & 0.322 & 0.298 & 0.286 & 0.250 \\
& GIREII MSE & 4.496 & 0.562 & 0.422 & 0.341 & 0.308 & 0.285 & 0.275 & 0.240 \\
\bottomrule
\end{longtable}
\end{center}
\end{document}
我已将其更改\tabcolsep为最大值（精度为两位小数），没有收到任何Overfull \hbox警告。
答案2
你的例子远非简单，但无论如何，看起来像是\midrule向前看，(所以你需要
\midrule\relax
正如你保护从一开始[就不\\向前看的细胞一样。